Microforming method and apparatus

a micro-former and micro-tube technology, applied in the field of micro-formering methods and apparatuses, can solve the problems of unsatisfactory results, unsatisfactory results, and large and achieve the effect of reducing the pile-up of raised displacement materials
US20100092796A1Active Publication Date: 2010-04-15NORTHWESTERN UNIV
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
NORTHWESTERN UNIV
Publication Date
2010-04-15

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Abstract

Method of forming depressions (e.g. dimples) in a sheet material to form a textured surface thereon involves pressing one or more tool tips into a metallic or non-metallic sheet material while the sheet material is supported by a support layer that is relatively softer (e.g. having a lower Young's modulus) than the sheet material so as to allow plastic deformation and reduce pile-up of raised displaced material of the sheet material at the edges of the depressions.
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Description

[0001] This application claims priority and benefits of U.S. provisional application Ser. No. 61 / 195,442 filed Oct. 7, 2008, the disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION

[0002] This invention relates to method and apparatus for rapidly and accurately creating micro-textured surfaces on sheet material using one or more tool tips pressed into the sheet material.BACKGROUND OF THE INVENTION

[0003] Currently, surface texturing is done via machining, embossing, chemical etching, or laser ablation. Machining entails removal of material from a substrate to leave a desired geometry. One example surface texture creation by micro-machining is the use of a turning operation along with a micro-positioning system [1]. This method allows for accurate shapes and tolerances, but is fairly time consuming and expensive. It could also results in an undesirable residual stress in the workpiece.

[0004] Embossing techniques use dies to plastically deform the surface of the m...

Claims

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